Hi Pingfan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc4]
[also build test ERROR on next-20180309]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

config: powerpc-pq2fads_defconfig (attached as .config)
compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

>> arch/powerpc/kernel/prom.c:79:23: error: 'boot_cpu_count' defined but not 
>> used [-Werror=unused-variable]
    static int __initdata boot_cpu_count;
   cc1: all warnings being treated as errors

vim +/boot_cpu_count +79 arch/powerpc/kernel/prom.c

9b6b563c Paul Mackerras         2005-10-06  71  
9b6b563c Paul Mackerras         2005-10-06  72  #ifdef CONFIG_PPC64
28897731 Olof Johansson         2006-04-12  73  int __initdata iommu_is_off;
9b6b563c Paul Mackerras         2005-10-06  74  int __initdata iommu_force_on;
cf00a8d1 Paul Mackerras         2005-10-31  75  unsigned long tce_alloc_start, 
cd3db0c4 Benjamin Herrenschmidt 2010-07-06  76  u64 ppc64_rma_size;
9b6b563c Paul Mackerras         2005-10-06  77  #endif
03bf469a Benjamin Herrenschmidt 2011-05-11  78  static phys_addr_t 
7ac87abb Matt Evans             2011-05-25 @79  static int __initdata 
9b6b563c Paul Mackerras         2005-10-06  80  

:::::: The code at line 79 was first introduced by commit
:::::: 7ac87abb8166b99584149fcfb2efef5773a078e9 powerpc: Fix early boot 
accounting of CPUs

:::::: TO: Matt Evans <m...@ozlabs.org>
:::::: CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>

0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip

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